Studies on plasma sprayed bi-layered ceramic coating on bio-medical Ti-13Nb-13Zr alloy

Sathish, S and Geetha, M and Aruna, ST (2011) Studies on plasma sprayed bi-layered ceramic coating on bio-medical Ti-13Nb-13Zr alloy. Ceramic Intternational, 37 (4). pp. 1333-1339.

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Abstract

Biomedical Ti alloys are prone to undergo degradation due to the combined effect of wear and corrosion. To overcome these problems, surface modification techniques are being used. In this paper, the biomedical Ti alloy Ti-13Nb-13Zr was plasma sprayed with nanostructured Al2O3 13 wt%TiO2, yttria stabilized zirconia powders and bilayer containing alternate layers of the two coatings to improve the corrosion resistance and microhardness of the substrate. The plasma sprayed coatings were characterized by X-ray diffraction, scanning electron microscopy and Raman spectroscopy. The microstructure, microhardness and surface roughness of the coatings were investigated. The corrosion resistance of the coatings was studied in simulated body conditions. The results show improved corrosion resistance for the bilayered coating compared to the individual plasma sprayed coatings on biomedical Ti-13Nb-13Zr alloy substrate. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Item Type: Journal Article
Uncontrolled Keywords: B. X-ray methods; C. Corrosion; C. Hardness; D. ZrO2; E. Biomedical applications
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: UNSPECIFIED, Other, Surface Engineering Division
Depositing User: Ms Indrani V
Date Deposited: 13 Jun 2011 16:12
Last Modified: 13 Jun 2011 16:12
URI: http://nal-ir.nal.res.in/id/eprint/9218

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